Apparatus fob



J. A. SCHANNO. APPARATUS FOR REMOVING CYLINDER LININGS.

APPUCATIOI FILED NOV. 20. I918.

Patented Sept. 9, 1919.

2 SHEETSS'HEET 1.

TIGI COLUMIIA PLANOURAPII 60-. WASHINGTON, l). L

1. A. SCHANNO. APPARATUS FOR REMOVING CYLINDER LININGS. APPLICATIONFILED NOV. 20, I918.

l ,3 1,5, 865 Patented Sept. 9, 1919.

2 SHEETS-SHEET 2.

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. osnrir AL scnnnivo, 0F BROOKLYN, new YORK.

APPARATUS ronnnrrovm cYLmDEnrILmINss.

Specification of Letters Patent.

Patented Sept. 9, 1919;

Application filed November 20, 1918. Serial No; 263,405.

To all whom it may concern Be it known that I, Josnri-r A. Sornmno, acitizen of the United States, residing at Brooklyn, in the county "ofKings and State of New York, have invented new and useful Improvementsin Apparatusfor Removing CylindenLinings, of which the following is aspecification.

This invention relates to improvements in ap mratus for removing thelinings of cylinders andhas particular application to an apparatus forfacilitating the removal of the linings of marine pump cylinders.

As is well known, owing to the unusual corrosion, caused by galvanicaction, salt and various impurities;marine pumps are usually built ofiron with brass linings, and it is often necessary to renew the liningsof the pumps. Incarrying out the present in" vcntion, it is my purposetoprovide an apparatus whereby the linings of theinarine pumps may bequickly and convenientlyremoved from the cylinder whenever necessary sothat a new lining may be inserted in the cylinder in place of the oldlinin It is also my purpose to provide an apparatus of the classdescribed which may be easily and conveniently placed within the pumpcylindel and which may be operated within the pump cylinder in suchmanner as to quickly cut the lining of the cylinder so that such liningmay be withdrawn from the cylinder and anew lining substituted therefor.a

With the above recited objects in view and others of a similar naturethe invention resides in the construction, combination and arrangementof parts set forth inand falling within the scope of the appendedclaims.

In the accompanying drawings? Figure 1 is a view in front elevation: ofa cutting device constructed in accordance with my invention. I l

Fig. 2 is a vertical sectional view through the same.

Fig. 3 15;1L1 cross sectional view therethrough, the cutting apparatusbeing shown as mounted within a cylinder and acting upon theliningthereofp Fig. 4 is a top-plan view ofthe apparatus ren'iovedfromthhcylindeh Fig. 5 is a similar view showing my improved cuttingapparatus as used to cut a heyway in a shaft. 1

Fig. 6 is a view similar to Fig. 5 showing the device used for cutting akeyway in a hub of a gear or thelike.

r Fig. 7 is a fragmentary sectional view showing a portion of thereversing gear.

Fig. 8 is a cross sectional view of the same.

Referring now to thedrawings in detail 1 designates anouter verticalcasing which, in the present instance, is substantially U- shaped incross section. Formed on the inner surfaces of the sides of the casing 1at the open end or side of such casing are vertical flanges 2 extendingtoward each other. The top and bottom ends of the casing 1 areclosedbymeans of platesshaped to conform to the cross sectionalconfiguration of the casing 1. Mounted within the casing 1 is a guidecasing 3 of cross sectional configuration corresponding to that of thecasing 1 and having ltS'SlClB and top and bottom walls 1n. engagementwlth the corresponding walls of the casing 1 andits open side and backspaced apart from the open side and back respectively of the casing 1 sothat the guide casing may be shifted forward and backward Within thecasing 1 whenever desired or necessary for a purpose which Wlllpresently appear. In the present instance, the outer surface of the backof the guide casing 3 is formed with wedge shoes 4 spaced apartvertically and the outer edges of the sides of the guidccasing atthcjopen front of such casing are formed with wedge shoes5 spaced apartvertlcally and arranged in confronting relation with the flanges 2 onthe casing 1. The numeral 6 designates wedge blocks, which, in thepresent nstance, are interposed respect1vely,be-

tween the wedge shoes 4: and the back wall of the casing 1 and the wedgeshoes 5 and the flanges 2. VVhenfthe wedge blocks in the front edges ofthe casing 3 are moved in one direction and an wedgeblocks in the rearof the casing 3 are moved in the opposite direction, the casing Sisshifted from the .fronttoward the back of the casing 1, while when, thedirection of movement of the wedges is reversed, the guide casing isshifted toward the front or 0 en side of the casjing 1. 1 These wedgebloc .{S and wedge shoes constitute a shifting. means for the guidecasing 3 and in this connection I wlsh it to be understood that othershitting means,

than that shown, may be employed without departing from the spirit of myinvention.

Extending through the inner guide casing 3 and j ournalecl in the topand bottom walls in the casings 1 and 3 is a shaft 7 formed with a wormor screw thread 8 extending longitudinally thereof. Surrounding theshaft 7 and engaged by the screw'threads 8 is a carriage 9 which, in thepresent instance, is in the form of a sleeve having a fiat side 10formed with an, outstanding ledge 11. Mounted upon the ledge 11 is a.tool post 12 of somesuitable construction and arranged within the toolpost 12 is a cutter 13.

In the present instance, the lower end of the tool post 12 is pivotallymounted upon the ledge 11, as clearly shown in Fig. 2 of the drawing, sothat the cutter will be held in engagement with the work while thecarriage is traveling in one direction under the action of the screw,and permitted to swing away from the work when the direction of movementof the carriage is reversed, thereby enabling the cutter to be returnedto its initial cuttingposition for a new operation.

The upper end of the shaft 7 is formed with a. tang 14 that is equippedwith any other means whereby said shaft may be connected up with asource of power such, for instance, as an {electric motor, or an airmotor.

In practice, the apparatus just described .is placed in the cylinder ofthe pump and the shaft 7 revolved. In the rotation of the shaft 7 thecarriage 9 is carried from one end of the cylinder to the other and thecutter 13 cuts the lining so that the latter may be removed from thecylinder.

By means of thewed blocks and wedge shoes, the guide casing within thecasing 1 so that the cutter maybe moved into and out of engagement withthe liningas is readily apparent.

In order that the casing3 may be freely shifted within the casing 1, theopenings in the end walls of the casing 1 through which the ends of theshaft 7 extend are elongated thereby permitting free movement of theshaft in the shifting of the casing 33. a

In this embodiment of my invention I.

have shown an appropriate form of reversing gear 15 which is connectedwith the outer end of the shaft 7 wherebythe shaft may be reversed toreverse the direction of movement of the carriage.

In the present instance the reversing gear embodies a stub shaft 16integral with and projecting upwardly from the inner casing 3 and formsadjacent to itsupper end, a circumferential groove 17 In the presentgroove is a split collar 18. Rotatably mounted upon the stub shaft 16 isa sleeve like shaft 19 having its upper end formed with a tang 20. 011the inner end of the sleeve like shaft 19 is a spur gear 21 which may beadjusted meshes with a similar gear 22 fast upon the shaft 7. By meansof this construction it will beseen that the flexible shaft. or otherdriving element that connects with V the source of power'may beconnected with the tangle when it is desired to rotate the shaft 7 inone direction, while such driving element may be disconnected from thetang 1 1 and connected with the tang 20 when it is de siredto rotate itthe shaft 7 in the reverse direction.

In Figs. 5 and 6 of the drawings I have shown my improved cuttingapparatus as employed for cutting ,keyways in shafting and in gear hubsand in order that my apparatus may be used accurately in this work,

the outer edges of the casing. 1 are formed with longitudinallyextendingVshaped ribs 24: as shown in the drawings.

W 1111s I have hereinshown and described one particular form ofmyinvention by way described means for reversing the direction.Of1110t10110f the shafts 7 and 16 respectively.

It is described that the motor employed. is shiftable from one of theseshafts to the other in order that the direction of rotation can bechanged. The proposedsuggestions in lieu thereofare the embodiment withthe mechanism of any wellknown form of gear shifting means which can becontrolled with& out the necessity of changing the normal position ofthe driving motor.

I claim a 1. An apparatus of the class described, an

outer. casing, an inner casing within said outer casing capable of belngshifted from one side of said outer caslng to the other side,

a carriage within said innercasingand capableof longitudinal movementwithin said inner casing, means for moving said "car riagelong1tud1nally,,and a cutter on said carriage adapted to be moved intoand out of engagement with the work according to the shifting of saidinner casings 2. An apparatus of the class described, an outer casinghaving: an: open side, an inner casing within said outer casing andhaving an open side adjacent to the openside of the outer casing, meansbetween said lnner and outer casing whereby the open side of the innercasing may be moved toward and away from the open side of the outercasing, acutter within said inner casing adapted to-be engaged with theWork through the open sides of said casingand to be moved into and outof engagement with the work according to the movement of said innereasing within said outer casing, and means for operating said cutter.

3. An apparatus of the class described, an

outer casing having an open side, an inner casing Witlnn said outercasing and having an open side adjacent to the open side of the outercasing, means between said inner and outer casing whereby the open sideof the inner easing may be moved toward and away from the open side ofthe outer casing, a cutter within said inner casing adapted to beengaged with the Work through the open sides of said casing and to bemoved into and out of engagement with the Work according to the movementof said inner easing Within said outer casing, a carriage upon whichsaid cutter is mounted and means for operating said carriage to rendersaid cutter active.

4. In an apparatus of the class described, a casing capable of lateralshifting movement, a carriage Within said easing capable of longitudinalmovement therein, means for moving said carriage longitudinally, and acutter on said carriage adapted to be moved into and out of engagementWith the Work according to the lateral movement of said casing.

In testimony whereof I aifix my signature. JOSEPH A. SCHANNO.

Copies of this patent may be obtained for ilve cents each, by addressingthe Commissioner of Patents. Washington, D. 0.

